(19)

(11)

EP 1 578 517 A2

(12)

(88) Date of publication A3: 30.09.2004 (43) Date of publication: 28.09.2005 Bulletin 2005/39 (21) Application number: 03780121.4 (22) Date of filing: 04.12.2003

(51) International Patent Classification (IPC)7: B01D 53/00 (86) International application number: PCT/EP2003/013699 (87) International publication number: WO 2004/056449 (08.07.2004 Gazette 2004/28)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 21.12.2002 DK 200201992 (71) Applicant: Haldor Topsoe A/S 2800 Kgs. Lyngby (DK)	(72) Inventors: SCHOUBYE, Peter DK-2970 H rsholm (DK) CHRISTENSEN, Kurt Agerb k DK-3460 Birker d (DK) NIELSEN, Morten Thellefsen DK-3400 Hiller d (DK)